diff --git a/hw/twl92230.c b/hw/twl92230.c
index 68fab884a..cd02d34fc 100644
--- a/hw/twl92230.c
+++ b/hw/twl92230.c
@@ -62,7 +62,7 @@ typedef struct {
     } rtc;
     qemu_irq out[4];
     qemu_irq *in;
-    int pwrbtn_state;
+    uint8_t pwrbtn_state;
     qemu_irq pwrbtn;
 } MenelausState;